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Finding the Fourth Proportional to 154,795.50, 213,627.11 and 86,816.49

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Solution

The fourth proportional to 154,795.50, 213,627.11 and 86,816.49 is: 119,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,795.50 : 213,627.11 = 86,816.49 : x
  2. Step 2: Convert to fraction form
    154,795.50/213,627.11 = 86,816.49/x
  3. Step 3: Cross multiply
    154,795.50x = 213,627.11 × 86,816.49
  4. Step 4: Simplify right side
    154,795.50x = 18,546,355,859.04
  5. Step 5: Solve for x
    x = 18,546,355,859.04/154,795.50
  6. Step 6: Final answer
    x = 119,811.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.